DESCRIPTION ?Collector-Emitter Sustaining Voltage- : VCEO(SUS)= 800V (Min) ?High Power Dissipation- : PD= 125W@TC= 25℃ APPLICATIONS ?Designed for use in large screen color deflection circuits. ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL PARAMETER VALUE UNIT VCES Collector- Emitter Voltage(VBE= 0) 1500 V VCEO Collector-Emitter Voltage 800 V VEBO Emitter-Base Voltage 5 V IC Collector Current- Continuous 8 A ICM Collector Current-Peak 15 A IB Base Current- Continuous 4 A IBM Base Current-Peak 6 A PC Collector Power Dissipation @ TC=25℃ 125 W TJ Junction Temperature 150 ℃ Tstg Storage Temperature Range -65~150 ℃ SYMBOL PARAMETER MAX UNIT Rth j-c Thermal Resistance,Junction to Case 1.0 ℃/W isc Silicon NPN Power Transistor BU508A ELECTRICAL CHARACTERISTICS TC=25℃ unless otherwise specified SYMBOL PARAMETER CONDITIONS MIN TYP. MAX UNIT VCEO(SUS) Collector-Emitter Sustaining Voltage IC= 100mA ; IB= 0 700 V VCE(sat) Collector-Emitter Saturation Voltage IC= 4.5A; IB= 2.0A 1.0 V VBE(sat) Base-Emitter Saturation Voltage IC= 4.5A; IB= 2.0A 1.5 V ICES Collector Cutoff Current VCE= 1500V ; VBE= 0 VCE= 1500V ; VBE= 0; TC=125℃ 0.1 2.0 mA IEBO Emitter Cutoff Current VEB= 5.0V ; IC= 0 10 mA hFE-1 DC Current Gain IC= 0.1A ; VCE= 5V 6 30 hFE-2 DC Current Gain IC= 4.5A ; VCE= 5V 2.25 COB Output Capacitance IE= 0; VCB= 10V; ftest= 0.1MHz 125 pF fT Current-Gain—Bandwidth Product IC= 0.1A; VCE= 5V; ftest= 1.0MHz 7 MHz Switching times tstg Storage Time IC= 4.5A , IB1= 1.8A; LB= 10μH 8.0 μs tf Fall Time 0.5 μs